The percentage of ownership of common stock or equity participation in the consolidated subsidiary.

No definition available.

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- Definition

Percentage of principal amount of debt remaining after redemption.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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Debt - 6.625% Senior Notes (Details) - USD ($)	May 18, 2017	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2014
6.625% Senior Notes Due 2022
Debt
Aggregate principal amount	$ 400,000,000
Stated interest rate (percent)	6.625%
Consolidation, Wholly Owned Subsidiary, Parent Ownership Interest, Percentage	100.00%
6.625% Senior Notes Due 2022 \| Covenant Replacement Event
Debt
Redemption price (percent)	101.00%
6.625% Senior Notes Due 2022 \| Redemption prior to May 15, 2019 via certain equity offerings
Debt
Redemption amount as a percentage of principal	35.00%
Redemption price (percent)	106.625%
6.625% Senior Notes Due 2022 \| Redemption prior to May 15, 2019
Debt
Redemption amount as a percentage of principal	100.00%
6.625% Senior Notes Due 2022 \| Minimum \| Redemption prior to May 15, 2019 via certain equity offerings
Debt
Remaining debt (percent)	65.00%
8.5% Senior Notes Due 2019
Debt
Aggregate principal amount	$ 200,000,000
Stated interest rate (percent)	8.50%		8.50%
Senior Notes \| 8.5% Senior Notes Due 2019
Debt
Aggregate principal amount				$ 200,000,000
Stated interest rate (percent)		6.625%		8.50%
Senior Secured Credit Facility
Debt
Aggregate principal amount	$ 30,000,000